USI® STM32™ Nucleo expansion board for LoRa™

USI® in partnership with STMicroelectronics developed the LoRa® expansion board for STM32 Nucleo (I-NUCLEO-LRWAN1). This board is an integrated solution allowing anyone to learn and develop solutions using LoRa® and/or FSK/OOK technologies.

The I-NUCLEO-LRWAN1 features the USI® LoRaWAN™ technology module, addressing low-cost and low-power wide area network (LPWAN) which comes with embedded AT-commands stack pre-loaded.

The I-NUCLEO-LRWAN1 can be controlled from an external host such as NUCLEO-L053 boards, running the I-CUBE-LRWAN embedded software. This software provides the means to set up a complete LoRaWAN™ node.

The I-NUCLEO-LRWAN1 is LoRaWAN™ class A certified and sustains the class C.

The I-NUCLEO-LRWAN1 includes the USI® LoRaWAN™ module, Arduino™ connectors, a SMA connector, a 50 Ω antenna and three ST environmental sensors.

For more details about all the components of the LoRa®-Middleware library, refer to the STM32 LoRa®software expansion for STM32Cube user manual (UM2073).

The I-NUCLEO-LRWAN1 is supplied by a third party not affiliated to ST. For complete and latest information, refer to the third party GitHub page

Key Features

  • USI® low-cost, LPWAN module supporting LoRa® technology:
    • ST ultra-low-power STM32L052T8Y6 MCU, Cortex® -M0+ based with 64 Kbytes of Flash memory, 8 Kbytes of RAM, 2 Kbytes of EEPROM, T-RNG
    • Semtech SX1272 radio transceiver supporting LoRa® , FSK, GFSK, MSK, GMSK and OOK modulation
    • High sensitivity down to -137 dBm
    • 860 to 1020 MHz frequency range
    • 14 to 20 dBm output power
    • 2.0 to 3.6 V voltage range
    • -40°C to +85°C temperature range
    • Embedded 32 KHz and 32 MHz crystals
    • USART communication interface
  • ST accelerometer and magnetometer sensor (LSM303AGR)
  • ST relative humidity and temperature sensor (HTS221)
  • ST pressure sensor (LPS22HB)
  • Arduino™ connectors
  • SMA connector (antenna included in the kit)





Description Version Size
DB3169 DB3169: USI® LoRa® expansion board for STM32 Nucleo 3.0 290 KB


Description Version Size
IoT connectivity made easier with STM32 MCUs and LoRa 1.2.0 2 MB


Description Version Size
Get ready for the largest IoT development ecosystem 17.02 741 KB
Description Version Size
STM32L series - Ultra-low-power 32-bit MCUs 16.4 3 MB


Product Certifications
Description Version Size
Certificate of compliance LoRaWAN certified product delivered to USI® 1.0 277 KB


MCUs Embedded Software


型号 Marketing Status Unit Price (US$) * Quantity Specific features ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
I-NUCLEO-LRWAN1 Active 24.50 1 Sub-GHz (868 MHz to 915 MHz) RF module NEC 3A991A2 - MORE INFO 直接购买 Add to cart DISTRIBUTOR AVAILABILITY

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors


型号 Marketing Status RoHS Compliance Grade Material Declaration**
I-NUCLEO-LRWAN1 ActiveEcopack1

(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.